Improvement in binders for sewing-machines



I. BLASIUS.

BINDERS FOR SEWING-MACHINES.

No. 192,731. v Patented Jfily 3,1877.

I {13M [III/J13 11/11/12 4- wlTplEssE-s I Q INVENTHFS. 1AM WMM v R4NJEIERS. FHOTO-LITHOGRAPHER, WASHINGTON, D O

UNITED STATES PATENT OFFICE.

JOHN BLASIUS, or CHICAGO, ILLINOIS.

IMPROVEMENT IN BINDERS FOR SEWING-MACHINES.

Specification forming part of Letters Patent No. 192,731, dated July 3,1877; application filed August 28, 1876.

providing some means to keep the same always close to the fabric;second, to adjust the same binder attachment so that differentthicknesses of fabric may be bound by the same binding.

In the drawings forming part of this specification, like letters ofreference indicate like I parts.

Figure 1 shows a front elevation of my device with the needle-bar andpressure-foot of a sewing-machine. Fig. 2 is a side elevation, and Fig.3 a plan, of the device. Fig. 4 is a plan of the binding-spring withadjusting-lever, showing its position toward the binding and fabric.Figs. 5 and 6 are enlarged sections of the loop on lines a: a: and y yof Fig. 1. Fig. 7 is a modification of my device.

The binder-plate A is fastened and held in proper position to thecloth-plate of a sewingmachine by means of a screw, a, operating in aslot, s, so as to allow a perfect adjustment direct in advance to theneedle N, as shown in Fig. 3.

At the front part of the binder'plate A is the loop B, through which thebinding-tape passes. This loop is fully closed at its outer end 12, asshown in section, Fig. 5, while the other part of the loop is open, theends only lapping over, as shown in Fig. 6. The binding enters the loopat b, and is guided therein, always being kept in proper position to thefabric, closely to the point of needle-entrance.

Thus far I do not claim any novelty, as I am well aware that similarloops have been used before.

It will easily be seen that, in case the fabric is not of a perfect eventexture, it will yield more or less while passing through thesewing-machine, and, in consequence thereof, the binding will not lie onas it ought to do. In order to remedy this defect, I provide my binderwith a spring, D, which, passing through a hole in the loop close to theneedle, will press upon the binding with its outer end d only slightlytouching the binding at the edge 0 of the fabric, as shown in Fig. 4. Aheavier pressure at the edge 0 would cause the fabric to back out, and aloose and imperfeet binding would be the consequence.

If the fabric is not of a uniform thickness, or if more than onethickness of the same fabric is to be carried through the binder, thespring D would not touch the binding at the proper place-at the pointd-if pressed upon by the pressure-foot.

The spring D is not high enough at the edge 0, and it must be elevatedbeyond this edge, which is done by means of the adjusting-lever L andset-screw l. The spring D rests upon this lever, and is elevated orlowered by the action of the set-screw l, as may be required by thethickness of the fabric.

By the action of the pressure-foot the spring D is curved downward at d,and the spring, being a little inclined toward the binding, willslightly press upon the same while it is passing through thesewing-machine, and will rub it closely to the fabric, and secure a goodand perfect job.

If the same thickness of fabric is used all the time, the abovementionedadjusting spring-lever L is not necessary, and the hinder may besimplified, as shown in Fig. 7.

What I claim as my invention, and desire to secure by Letters Patent, is

The combination, with the plate A and loop B, of the spring D, lever L,and set-screw Z, substantially as and for the purposes set forth.

JOHN BLASIUS.

Witnesses:

JULIUs WILGKE, PHILIP SPII'z.

